band.min.js

/*! BandJS - v1.1.1 - 2014-07-22 */
!function(a){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=a();else if("function"==typeof define&&define.amd)define([],a);else{var b;"undefined"!=typeof window?b=window:"undefined"!=typeof global?b=global:"undefined"!=typeof self&&(b=self),b.BandJS=a()}}(function(){return function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);throw new Error("Cannot find module '"+g+"'")}var j=c[g]={exports:{}};b[g][0].call(j.exports,function(a){var c=b[g][1][a];return e(c?c:a)},j,j.exports,a,b,c,d)}return c[g].exports}for(var f="function"==typeof require&&require,g=0;g<d.length;g++)e(d[g]);return e}({1:[function(a,b,c){!function(a){"object"==typeof c&&(b.exports=a())}(function(){return window.AudioContext||window.webkitAudioContext})},{}],2:[function(a,b){function c(b,c){if(b||(b="equalTemperament"),c||(c="northAmerican"),"undefined"==typeof d.tuning[b])throw new Error(b+" is not a valid tuning pack.");if("undefined"==typeof d.rhythm[c])throw new Error(c+" is not a valid rhythm pack.");var e,f=this,g=function(){},h=a("audiocontext"),i={2:6,4:3,8:4.5};f.packs=d,f.pitches=d.tuning[b],f.notes=d.rhythm[c],f.audioContext=new h,f.masterVolumeLevel=null,f.masterVolume=f.audioContext.createGain(),f.masterVolume.connect(f.audioContext.destination),f.beatsPerBar=null,f.noteGetsBeat=null,f.tempo=null,f.instruments=[],f.totalDuration=0,f.currentSeconds=0,f.percentageComplete=0,f.noteBufferLength=20,f.onTickerCallback=g,f.onFinishedCallback=g,f.onDurationChangeCallback=g,f.load=function(a){if(f.instruments.length>0&&f.destroy(),!a)throw new Error("JSON is required for this method to work.");if("undefined"==typeof a.instruments)throw new Error("You must define at least one instrument");if("undefined"==typeof a.notes)throw new Error("You must define notes for each instrument");"undefined"!=typeof a.timeSignature&&f.setTimeSignature(a.timeSignature[0],a.timeSignature[1]),"undefined"!=typeof a.tempo&&f.setTempo(a.tempo);var b={};for(var c in a.instruments)a.instruments.hasOwnProperty(c)&&(b[c]=f.createInstrument(a.instruments[c].name,a.instruments[c].pack));for(var d in a.notes)if(a.notes.hasOwnProperty(d))for(var e=-1;++e<a.notes[d].length;){var g=a.notes[d][e];if("string"==typeof g){var h=g.split("|");"rest"===h[1]?b[d].rest(h[0]):b[d].note(h[0],h[1],h[2])}else"rest"===g.type?b[d].rest(g.rhythm):"note"===g.type&&b[d].note(g.rhythm,g.pitch,g.tie)}return f.finish()},f.createInstrument=function(b,c){var d=a("./instrument.js"),e=new d(b,c,f);return f.instruments.push(e),e},f.finish=function(){var b=a("./player.js");return e=new b(f)},f.destroy=function(){f.audioContext=new h,f.instruments.length=0,f.masterVolume=f.audioContext.createGain(),f.masterVolume.connect(f.audioContext.destination)},f.setMasterVolume=function(a){a>1&&(a/=100),f.masterVolumeLevel=a,f.masterVolume.gain.setValueAtTime(a,f.audioContext.currentTime)},f.getTotalSeconds=function(){return Math.round(f.totalDuration)},f.setTickerCallback=function(a){if("function"!=typeof a)throw new Error("Ticker must be a function.");f.onTickerCallback=a},f.setTimeSignature=function(a,b){if("undefined"==typeof i[b])throw new Error("The bottom time signature is not supported.");f.beatsPerBar=a,f.noteGetsBeat=i[b]},f.setTempo=function(a){f.tempo=60/a,e&&(e.resetTempo(),f.onDurationChangeCallback())},f.setOnFinishedCallback=function(a){if("function"!=typeof a)throw new Error("onFinished callback must be a function.");f.onFinishedCallback=a},f.setOnDurationChangeCallback=function(a){if("function"!=typeof a)throw new Error("onDurationChanged callback must be a function.");f.onDurationChangeCallback=a},f.setNoteBufferLength=function(a){f.noteBufferLength=a},f.setMasterVolume(100),f.setTempo(120),f.setTimeSignature(4,4)}b.exports=c;var d={instrument:{},rhythm:{},tuning:{}};c.loadPack=function(a,b,c){if(-1===["tuning","rhythm","instrument"].indexOf(a))throw new Error(a+" is not a valid Pack Type.");if("undefined"!=typeof d[a][b])throw new Error("A(n) "+a+' pack with the name "'+b+'" has already been loaded.');d[a][b]=c}},{"./instrument.js":5,"./player.js":7,audiocontext:1}],3:[function(a,b){function c(a,b){function c(a){for(var c=2*b.sampleRate,d=b.createBuffer(1,c,b.sampleRate),e=d.getChannelData(0),f=0;c>f;f++)e[f]=2*Math.random()-1;var g=b.createBufferSource();return g.buffer=d,g.loop=!0,g.connect(a),g}function d(a){var c,d,e,f,g,h,i,j=2*b.sampleRate,k=b.createBuffer(1,j,b.sampleRate),l=k.getChannelData(0);c=d=e=f=g=h=i=0;for(var m=0;j>m;m++){var n=2*Math.random()-1;c=.99886*c+.0555179*n,d=.99332*d+.0750759*n,e=.969*e+.153852*n,f=.8665*f+.3104856*n,g=.55*g+.5329522*n,h=-.7616*h-.016898*n,l[m]=c+d+e+f+g+h+i+.5362*n,l[m]*=.11,i=.115926*n}var o=b.createBufferSource();return o.buffer=k,o.loop=!0,o.connect(a),o}function e(a){for(var c=2*b.sampleRate,d=b.createBuffer(1,c,b.sampleRate),e=d.getChannelData(0),f=0,g=0;c>g;g++){var h=2*Math.random()-1;e[g]=(f+.02*h)/1.02,f=e[g],e[g]*=3.5}var i=b.createBufferSource();return i.buffer=d,i.loop=!0,i.connect(a),i}var f=["white","pink","brown","brownian","red"];if(-1===f.indexOf(a))throw new Error(a+" is not a valid noise sound");return{createNote:function(b){switch(a){case"white":return c(b);case"pink":return d(b);case"brown":case"brownian":case"red":return e(b)}}}}b.exports=c},{}],4:[function(a,b){function c(a,b){var c=["sine","square","sawtooth","triangle"];if(-1===c.indexOf(a))throw new Error(a+" is not a valid Oscillator type");return{createNote:function(c,d){var e=b.createOscillator();return e.connect(c),e.type=a,e.frequency.value=d,e}}}b.exports=c},{}],5:[function(a,b){function c(a,b,c){function d(a){if("undefined"==typeof c.notes[a])throw new Error(a+" is not a correct rhythm.");return 10*(c.notes[a]*c.tempo/c.noteGetsBeat)}function e(a){if(null===a||"object"!=typeof a)return a;var b=a.constructor();for(var c in a)a.hasOwnProperty(c)&&(b[c]=a[c]);return b}if(a||(a="sine"),b||(b="oscillators"),"undefined"==typeof c.packs.instrument[b])throw new Error(b+" is not a currently loaded Instrument Pack.");var f=this,g=0,h=1,i=.05;f.totalDuration=0,f.bufferPosition=0,f.instrument=c.packs.instrument[b](a,c.audioContext),f.notes=[],f.setVolume=function(a){return a>1&&(a/=100),h=a,f},f.note=function(a,b,e){var g=d(a),j=e?0:g*i;if(b){b=b.split(",");for(var k=-1;++k<b.length;){var l=b[k];if(l=l.trim(),"undefined"==typeof c.pitches[l]&&(l=parseFloat(l),isNaN(l)||0>l))throw new Error(l+" is not a valid pitch.")}}return f.notes.push({rhythm:a,pitch:b,duration:g,articulationGap:j,tie:e,startTime:f.totalDuration,stopTime:f.totalDuration+g-j,volumeLevel:h/4}),f.totalDuration+=g,f},f.rest=function(a){var b=d(a);return f.notes.push({rhythm:a,pitch:!1,duration:b,articulationGap:0,startTime:f.totalDuration,stopTime:f.totalDuration+b}),f.totalDuration+=b,f},f.repeatStart=function(){return g=f.notes.length,f},f.repeatFromBeginning=function(a){return g=0,f.repeat(a),f},f.repeat=function(a){a="undefined"==typeof a?1:a;for(var b=f.notes.slice(g),c=0;a>c;c++)for(var d=-1;++d<b.length;){var h=e(b[d]);h.startTime=f.totalDuration,h.stopTime=f.totalDuration+h.duration-h.articulationGap,f.notes.push(h),f.totalDuration+=h.duration}return f},f.resetDuration=function(){var a=-1,b=f.notes.length;for(f.totalDuration=0;++a<b;){var c=f.notes[a],e=d(c.rhythm),g=c.tie?0:e*i;c.duration=d(c.rhythm),c.startTime=f.totalDuration,c.stopTime=f.totalDuration+e-g,c.pitch!==!1&&(c.articulationGap=g),f.totalDuration+=e}}}b.exports=c},{}],6:[function(a,b){b.exports=a("./conductor.js"),b.exports.loadPack("instrument","noises",a("./instrument-packs/noises.js")),b.exports.loadPack("instrument","oscillators",a("./instrument-packs/oscillators.js")),b.exports.loadPack("rhythm","northAmerican",a("./rhythm-packs/north-american.js")),b.exports.loadPack("rhythm","european",a("./rhythm-packs/european.js")),b.exports.loadPack("tuning","equalTemperament",a("./tuning-packs/equal-temperament.js"))},{"./conductor.js":2,"./instrument-packs/noises.js":3,"./instrument-packs/oscillators.js":4,"./rhythm-packs/european.js":8,"./rhythm-packs/north-american.js":9,"./tuning-packs/equal-temperament.js":10}],7:[function(a,b){function c(a){function b(b){for(var c=-1,f=a.instruments.length;++c<f;){var g=a.instruments[c];b&&g.resetDuration(),g.bufferPosition=0}for(b&&(d(),l=a.percentageComplete*a.totalDuration),c=-1;++c<k.length;)k[c].gain.disconnect();clearTimeout(h),k=e()}function c(b,c,d){if("undefined"==typeof d&&(d=!1),"up"!==b&&"down"!==b)throw new Error("Direction must be either up or down.");var e=.2;m="down"===b,"up"===b?(a.masterVolume.gain.linearRampToValueAtTime(0,a.audioContext.currentTime),a.masterVolume.gain.linearRampToValueAtTime(a.masterVolumeLevel,a.audioContext.currentTime+e)):(a.masterVolume.gain.linearRampToValueAtTime(a.masterVolumeLevel,a.audioContext.currentTime),a.masterVolume.gain.linearRampToValueAtTime(0,a.audioContext.currentTime+e)),setTimeout(function(){"function"==typeof c&&c.call(j),d&&(m=!m,a.masterVolume.gain.linearRampToValueAtTime(a.masterVolumeLevel,a.audioContext.currentTime))},1e3*e)}function d(){for(var b=-1,c=0;++b<a.instruments.length;){var d=a.instruments[b];d.totalDuration>c&&(c=d.totalDuration)}a.totalDuration=c}function e(){for(var b=[],c=-1,d=a.noteBufferLength;++c<a.instruments.length;){for(var e=a.instruments[c],f=d,g=-1;++g<f;){var h=e.notes[e.bufferPosition+g];if("undefined"==typeof h)break;var i=h.pitch,j=h.startTime,k=h.stopTime,m=h.volumeLevel;if(l>k)f++;else if(!1!==i){var n=a.audioContext.createGain();if(n.connect(a.masterVolume),n.gain.value=m,l>j&&(j=k-l),"undefined"==typeof i)b.push({startTime:l>j?k-l:j,stopTime:k,node:e.instrument.createNote(n),gain:n,volumeLevel:m});else for(var o=-1;++o<i.length;){var p=i[o];b.push({startTime:j,stopTime:k,node:e.instrument.createNote(n,a.pitches[p.trim()]||parseFloat(p)),gain:n,volumeLevel:m})}}}e.bufferPosition+=f}return b}function f(){!j.paused&&j.playing&&(a.totalDuration<l?(j.stop(!1),j.looping?j.play():a.onFinishedCallback()):(g(),setTimeout(f,1e3/60)))}function g(){l+=a.audioContext.currentTime-i;var b=Math.round(l);b!=a.currentSeconds&&(setTimeout(function(){a.onTickerCallback(b)},1),a.currentSeconds=b),a.percentageComplete=l/a.totalDuration,i=a.audioContext.currentTime}var h,i,j=this,k=e(),l=0,m=!1;d(),j.paused=!1,j.playing=!1,j.looping=!1,j.muted=!1,j.play=function(){j.playing=!0,j.paused=!1,i=a.audioContext.currentTime,f();var b=a.audioContext.currentTime-l,d=function(a){for(var c=-1;++c<a.length;){var d=a[c],e=d.startTime+b,f=d.stopTime+b;d.tie||(e>0&&(e-=.001),f+=.001,d.gain.gain.setValueAtTime(0,e),d.gain.gain.linearRampToValueAtTime(d.volumeLevel,e+.001),d.gain.gain.setValueAtTime(d.volumeLevel,f-.001),d.gain.gain.linearRampToValueAtTime(0,f)),d.node.start(e),d.node.stop(f)}},g=function(){h=setTimeout(function(){if(j.playing&&!j.paused){var a=e();a.length>0&&(d(a),k=k.concat(a),g())}},5e3*a.tempo)};d(k),g(),m&&!j.muted&&c("up")},j.stop=function(d){j.playing=!1,a.currentSeconds=0,a.percentageComplete=0,"undefined"==typeof d&&(d=!0),d&&!j.muted?c("down",function(){l=0,b(),setTimeout(function(){a.onTickerCallback(a.currentSeconds)},1)},!0):(l=0,b(),setTimeout(function(){a.onTickerCallback(a.currentSeconds)},1))},j.pause=function(){j.paused=!0,g(),j.muted?b():c("down",function(){b()})},j.loop=function(a){j.looping=!!a},j.setTime=function(a){l=parseInt(a),b(),j.playing&&!j.paused&&j.play()},j.resetTempo=function(){b(!0),j.playing&&!j.paused&&j.play()},j.mute=function(a){j.muted=!0,c("down",a)},j.unmute=function(a){j.muted=!1,c("up",a)}}b.exports=c},{}],8:[function(a,b){b.exports={semibreve:1,dottedMinim:.75,minim:.5,dottedCrotchet:.375,tripletMinim:.33333334,crotchet:.25,dottedQuaver:.1875,tripletCrotchet:.166666667,quaver:.125,dottedSemiquaver:.09375,tripletQuaver:.083333333,semiquaver:.0625,tripletSemiquaver:.041666667,demisemiquaver:.03125}},{}],9:[function(a,b){b.exports={whole:1,dottedHalf:.75,half:.5,dottedQuarter:.375,tripletHalf:.33333334,quarter:.25,dottedEighth:.1875,tripletQuarter:.166666667,eighth:.125,dottedSixteenth:.09375,tripletEighth:.083333333,sixteenth:.0625,tripletSixteenth:.041666667,thirtySecond:.03125}},{}],10:[function(a,b){b.exports={C0:16.35,"C#0":17.32,Db0:17.32,D0:18.35,"D#0":19.45,Eb0:19.45,E0:20.6,F0:21.83,"F#0":23.12,Gb0:23.12,G0:24.5,"G#0":25.96,Ab0:25.96,A0:27.5,"A#0":29.14,Bb0:29.14,B0:30.87,C1:32.7,"C#1":34.65,Db1:34.65,D1:36.71,"D#1":38.89,Eb1:38.89,E1:41.2,F1:43.65,"F#1":46.25,Gb1:46.25,G1:49,"G#1":51.91,Ab1:51.91,A1:55,"A#1":58.27,Bb1:58.27,B1:61.74,C2:65.41,"C#2":69.3,Db2:69.3,D2:73.42,"D#2":77.78,Eb2:77.78,E2:82.41,F2:87.31,"F#2":92.5,Gb2:92.5,G2:98,"G#2":103.83,Ab2:103.83,A2:110,"A#2":116.54,Bb2:116.54,B2:123.47,C3:130.81,"C#3":138.59,Db3:138.59,D3:146.83,"D#3":155.56,Eb3:155.56,E3:164.81,F3:174.61,"F#3":185,Gb3:185,G3:196,"G#3":207.65,Ab3:207.65,A3:220,"A#3":233.08,Bb3:233.08,B3:246.94,C4:261.63,"C#4":277.18,Db4:277.18,D4:293.66,"D#4":311.13,Eb4:311.13,E4:329.63,F4:349.23,"F#4":369.99,Gb4:369.99,G4:392,"G#4":415.3,Ab4:415.3,A4:440,"A#4":466.16,Bb4:466.16,B4:493.88,C5:523.25,"C#5":554.37,Db5:554.37,D5:587.33,"D#5":622.25,Eb5:622.25,E5:659.26,F5:698.46,"F#5":739.99,Gb5:739.99,G5:783.99,"G#5":830.61,Ab5:830.61,A5:880,"A#5":932.33,Bb5:932.33,B5:987.77,C6:1046.5,"C#6":1108.73,Db6:1108.73,D6:1174.66,"D#6":1244.51,Eb6:1244.51,E6:1318.51,F6:1396.91,"F#6":1479.98,Gb6:1479.98,G6:1567.98,"G#6":1661.22,Ab6:1661.22,A6:1760,"A#6":1864.66,Bb6:1864.66,B6:1975.53,C7:2093,"C#7":2217.46,Db7:2217.46,D7:2349.32,"D#7":2489.02,Eb7:2489.02,E7:2637.02,F7:2793.83,"F#7":2959.96,Gb7:2959.96,G7:3135.96,"G#7":3322.44,Ab7:3322.44,A7:3520,"A#7":3729.31,Bb7:3729.31,B7:3951.07,C8:4186.01}},{}]},{},[6])(6)});